Received faulty refurbished R5 from Canon

I bought a refurbished R5 from Canon last week. First time I turned it on, the EVF was glitchy and there was a low pitched humming sound coming from inside the camera (guessing it was the fan?).

Anyway, since then, I’ve done 3 shoots with it and the EVF and camera work perfectly fine now.

I was planning on returning it, but if the problems have subsided, should I still send it back? Or will these issues pop up again in the future?